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MP #2 (no #1)

# MP #2 (no #1) - Print View Class PH1110A2007 Assignment 2...

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1 of 10 [ Print View ] Class PH1110A2007 Assignment 2 Due at 5:00pm on Monday, August 27, 2007 View Grading Details Kinematic Vocabulary One of the difficulties in studying mechanics is that many common words are used with highly specific technical meanings, among them velocity , acceleratio n , position , speed , and displacement . The series of questions in this problem is designed to get you to try to think of these quantities like a physicist. Answer the questions in this problem using words from the following list: position A. direction B. displacement C. coordinates D. velocity E. acceleration F. distance G. magnitude H. vector I. scalar J. components K. Part A Velocity differs from speed in that velocity indicates a particle's __________ of motion. Enter the letter from the list given in the problem introduction that best completes the sentence. ANSWER: B Part B Unlike speed , velocity is a __________ quantity. Enter the letter from the list given in the problem introduction that best completes the sentence. ANSWER: I Part C A vector has, by definition, both __________ and direction. Enter the letter from the list given in the problem introduction that best completes the sentence. ANSWER: H Part D Once you have selected a coordinate system, you can express a two-dimensional vector using a pair of quantities known collectively as __________. Enter the letter from the list given in the problem introduction that best completes the

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2 of 10 sentence. ANSWER: K Part E Speed differs from velocity in the same way that __________ differs from displacement . Hint E.1 Definition of displacement Hint not displayed Enter the letter from the list given in the problem introduction that best completes the sentence. ANSWER: G Part F Consider a physical situation in which a particle moves from point A to point B. This process is described from two coordinate systems that are identical except that they have different origins. The __________ of the particle at point A differ(s) as expressed in one coordinate system compared to the other, but the __________ from A to B is/are the same as expressed in both coordinate systems. Type the letters from the list given in the problem introduction that best complete the sentence. Separate the letters with commas. There is more than one correct answer, but you should only enter one pair of comma seperated letters. For example, if the words 'vector' and 'scalar' fit best in the blanks, enter I,J . ANSWER: A,G The coordinates of a point will depend on the coordinate system that is chosen, but there are several other quantities that are independent of the choice of origin for a coordinate system: in particular, distance, displacement, direction, and velocity. In working physics problems, unless you are interested in the position of an object or event relative to a specific origin, you can usually choose the coordinate system origin to be wherever is most convenient or intuitive.
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MP #2 (no #1) - Print View Class PH1110A2007 Assignment 2...

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